Solid assembly meshing has all of the same “dirty geometry” induced issues as single part meshing but also has the difficulty associated with generating a conformal mesh between solids where solid-solid interfaces are not obvious. Mesh generators usually don’t have CAD assembly constraint information to identify interfacing solids and must therefore rely on geometric proximity to deduce these i...

The AVHRR compatible vegetation index derived from MERIS full resolution (FR) data is based on top of atmosphere radiances (ESA L2 data). This continuity index is developed using radiative transfer models for simulating the reflectance of the broad spectral channels of the NOAA – AVHRR and the small spectral bands of MERIS. A linear combination of MERIS channels describes each AVHRR channel. Th...

This paper studies a time-varying coefficient predictive regression model, which takes account of the endogeneity and nearly integrated and integrated state variables. A local linear approach is used to estimate the time-varying coefficients. The asymptotic distributions of these estimates are established for α-mixing time series and the uniform convergence with a rate is also investigated. Fur...

and thus being a universal hash function family is equivalent to having a probability distribution on functions from D to R that maps elements of D in a uniform pairwise independent fashion. Typically we will consider D = {0, 1} and R = {0, 1} form < n. The following construction due to Dietzfelbinger is particularly convenient: The space of keys is all strings K = (a, b) where a, b ∈ {0, 1} an...

..4bstract—A novel ultrabroad-band amplifier configuration suitable for GaAs FET’s has been developed. The developed amplifier circuit operates as a capacitor-resistor ( C–R ) coupled mnpfifier circuit in the lowfrequency range in which IS21 I for the GaAs FET’s is constant. It also operates as a lossless impedance matching circuit in the microwave frequency range in which IS21 I for the GaAs F...

We report a detailed investigation of flicker noise in novel GaN/AlGaN heterostructure field-effect transistors (GaN HFET). Low values of 1=f noise found in these devices (i.e., the Hooge parameter is on the order of 10 ) open up the possibility for applications in communication systems. We have examined the scaling of the noise spectral density with the device dimensions in order to optimize t...

In this paper, we develop a feature comparison method for the Chinese-chess object by using the features comparison based on input image and database. Features are generated by calculating the distance between the contour of the character and the centre of the chess object. In this paper, the noise filter, object extraction, normalization, feature calculation (FC) and maximum energy slop (MES) ...

the neat bitumen, an oil refining by-product, has its own inherent weakness under long-time loading at low and high temperatures. these performance limitations of neat bitumen have led researchers to modify its physical andmechanical properties. according to several studies, polymers can be used to modify the properties of bitumen. due to much lower production costs and aiming to reduce environ...